Seiko Cal. 4531 - 311

This Hand-Winding model from 1965 features a 40mm Hardlex-Coated Steel case. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-fe22109c5e3b]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1965

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